spagke



2 Sheets-Sheet 1.

(No Model.;

P. W. SPACER. GOVERNOR PGN GAS ENGINES.

No. 589,583. Patented Sept. 7,1897.

IVVENTUH ATTORNEYS.

(No Model.; 2 sheets-sheen 2.

P. W. SPAGKB. GOVERNOR EOE GAS ENGINES.

No. 589,583. Patented Sept. '7, 1897.

UNITED STATES PATENT EETCE,

FRED IV. SPACKE, OF INDIANAPOLIS, INDIANA.

GOVERNOR FoR Yens-EneINI-:5.

SPECIFICATION forming part of Letters Patent No. 589,583, datedSeptember '7, 1897. v -llpplieation filed April 7, 1896. Serial No.586,570. (No model.)

To n/Zl whom, t may concern,.-

Be it known that I, FEED W. SPACKE, a citi- ',:en of -the United States,residing at Indianapolis, in the county of Marion and State of Indiana,haveiuvented a new and useful Governor for Gas-En gin es, of which thefollowing is a' specification.

Myinvention relates to an improifementin governors for gas-engines.

The object of my invention is toproduce a governor which will be verysensitive to changes of load, and also to produce a governor which willbe particularly adapted for use on double-acting gas-engines, moreparticularly the engine described and claimed in my pending application,Serial No. 586,572, iiled herewith.

The accompanying drawings illustrate my invention.

Figure 1 is a plan view of the governor, showing also a centralhorizontal section of the engine shown in the above-mentionedapplication. Fig. 2 is aside elevation of the governor on -a largerscale. Eig. 3 is a section on line 3 3 of Eig. l. Fig. 4 is a sect-ionof one of the gas-inlet-valve-operating mechanisms. Fig. 5 is a similarview of the other'gas-inletvalve mechanism. Fig. G is a centralhorizontal section thereof. Fig. '7 is a detail of one of theadmission-valves and its operating meehanism. Fig. S is a detail of aportion of the governor.

In the drawings, flindicates a cylinder in which is mounted apiston 10.A pair of ports 11 and 12 open one into each end of the `cylinder, andover said ports are secured, respectively, the valve-boxes 13 and 14.Each of said valve-boxes is provided with a chamber 15, whichcommunicates with the corresponding port 1l. or 12 and is alsoprovidedWit-l1 an adm ission-chamber 1G and an exhaustchamber 17, each of saidchambers communieating with chamber 15, and the communicationstherebetween being closed in box 13 by an admission-valve 1S and anexhaust-valve 1Q and in boX 14 byadmission-valve 2O and exhaust-valve21.

' Mountedin suitable bearings on the engineframe is a shaft 22, which isconnected to the crank-shaft of the engine by suitable means to causethe said` shaft to rotate at one-half of the'speed of the saidcrank-shaft. Each admission-'valve stem is provided at its outer endwith an I-shaped head 23, and each exhaust-valve stem is provided'n-itha head 24, Somewhat similar in shape.

Pivoted below each stem, is a lever 25, the upper end of vi hich is bilurcated and arranged to engage one of the I-shaped heads of theValve-stems. The lower ends of levers 25 are extended in position to been gaged each bya cam 26, carried by shaft- 22, and one of a series ofsprings 27 is secured at one end to thelower end of each lever and atthe other end to one of the valve-boxes, the whole arrangement beingsuch that the movement of the piston will cause the valves to beintermittently opened, and the action of the springs will cause saidvalves to close.

Mounted between the admission-chambers of boxes I3 and 14 andcommunicating therewith is a mixing-chamber 2S, into which is led anysuitable supply of air, in the present case the said supply coming froma chamber 29, which is formed between the middle portion of the pistouand the walls of the cylinder.

Each end of the mixing-chamber is enlarged, and opening into saidenlarged portion is a passage 3], into which opens a suitable gas-inletpipe Mounted in the inner end of passage 31 by means of suitablescrewthreads is a valve-seat 33. Formed integral with the inner end ofsaid seat are a pair of arms 34, which Carr)-Y about midway of theirlength a cylindrical guide 35, and connecting the ends of said arms is across-bar 36. A valve-stem 37 is mounted so as to slide throughcross-bar 36, and the outer end of said stem is provided with a valve3S, which is adapted to lit into seat and to thereby. close the openingbetween the gas-inlet. and the mix` ing-chamber. Secured to or formedintegral with stem 37 is a collar 30, which is adapted' to fit and toslide longitudinally in guide 35, and a spring 40, mounted betweencollar 39 and cross-bar 36, tends to keep the said valve closed. A pin41 is secured to collar 39 and extends through a slot- 42, formed in theguide. Iivoted to pin 41 is a lever 43, the outer end of which extendsthrough a slot 44, formed in the outer wall of the mixing-chamber, andthe inner end of said lever is adapted to be engaged either by an arm 45or an arm 45, carried by a rock-shaft 46, which is mounted IOC insuitable bearings in the walls of the mixing-chamber and the ends ofwhich project into said chamber. The outer end of lever 43 is providedat its upper and lower edges with a short spur 47. Secured to each I-shaped head 23 of each of the admission-v valve stems is a pin 48, theinner end of which is notched, as at 49, the said pins being eacharranged so as to be adapted to engage the outer end of one of levers 43when the corresponding` admission-valve is opened.

Mounted in a suitable bearing 50, secured to the walls of themixing-chamber, is an up-l right governor-shaft 5l, which is providedatY its lower end with a gear 52, which meshes with a gear 53, carriedby shaft Secured to the upper end of shaft 5l atopposite sides thereofare a pair of links 54, to the lower en ds of which are pivoted a pairof governor-balls 55, which are carried upon the upper ends of a pair oflinks 56, pivoted at their lower ends to a block 57, which islongitudinally movable on shaft 5l. Block 57 is provided with a flange58, the upper surface of which is adapted to be engaged by two rollers59, which are carried at the outer ends of a pair of arms G0, which aresecured to rock-shaft 4G, the arrangement being such that a movement ofthe governor-balls away from the governorshaft will cause block 57 tomove upward upon shaft 5l, and said movement of the block will causeshaft 46 to be rocked. Mounted upon the upper end of bearing 50 andarranged to be longitudinally movable thereon is a collar Gl, providedwith a set-screw (32, by means of which the collar may be secured at anydesired position on bearing 50. Mounted on the upper end of bearing 50,below collar Gl, and free to move on said bearing, is a plate 63,provided with a pair of oppositely-extending arms G4, to the outer endof each of which is secured one end of one of a pair of springs (55, theupper ends of said springs being secured one to each of arms GO, thesaid springs tending to restrain the outward movement of balls 55.

The ends of rock-shaft 4G, which project into the mixing-chamber, areprovided with suitable screw-threads, onto which is screwed at one end acheck-nut (56 and a short rod (57 and to the other end of which isscrewed a similar nut 68 and a rod 69. Secured near the outer end of rod(57 and substantially at right angles thereto is an arm 45, andsimilarly secured .to rod 69 is an arm 45", the arrangement being suchthat the inner ends of levers 43 will engage with the arms 45 and 45land will be held in contact therewith by means of the heavier outer endsof said levers. A pair of collars 70 are mounted, one on each rod 67 and69, and are adapted to engage the outer walls of the enlarged portionsof the mixingchamber.

Arms 45 and 45l are so adjusted, by means of the screw-threads on theends of the rockshaft and by means of the check-nuts 66 and 68, thatwhen the engine is at rest arm 45 will just be in engagement with itslever 43, while arm 45" will be set somewhat lower, so that the outerend of its corresponding lever 43 will be slightly raised.

The operation is as follows: The movement of the piston causes shaft 22to rotate, andthe rotation of said shaft by means of gears 53 and 52 andshaft 5l causes the balls 55 to flyoutward and thereby raise block 57,the movement of said block causing the outer ends or' arms GO to moveupward and thereby roei; shaft 46, said shaft in turn causing arms 45and 45 to press down upon the inner ends of levers 43 and thus raise theouter ends thereof. Under ordinary loads the outward movement of thegovernor-balls is sufficient to cause arm 45" to so raise the outer endof its corresponding lever 43 that the said lever will be out or' thepath of movement of the corresponding pin 48, while arm 45 will raisethe outer end of its corresponding lever 43, but will not raise the saidend out of the path of movement of the corresponding pin 48. Theinwardopeningmovement of the admission-valves. caused by the rotation ofshaft 22, cam 26, and the movement of lever 25, will therefore cause oneof the pins 48 to engage with the outer end of l[he lever 43, which isengaged by arm 45. and will press the said lever inward, thereby openingvalve 38 against the action of spring 4() and thus allowing a certainportion of gas to pass into the mixing-chamber, where it is mixed withthe required quantity of air and from there drawn through theadmissionvalve into the cylinder. The inward movement of the otheradmission-valve is precisely the same, but the outer end of thecorresponding lever 43, which is controlled by arm 45". being lifted outof the path of movement or' pin 48, carried by said valve, the gas-inletvalve, which is operated by said lever, will not be opened, andtherefore no new charge will pass into that end of the cylinder. Underordinary loads, therefore, butV one end or' the cylinder is suppliedwith gas, and the engine operates as a single-acting engine. t' thespeed increases sufliciently, arm 45 will lift its lever 43 out of thepath of the corresponding pin 48, and there will be no new chargesupplied to either end of the cylinder. If the load becomes heavy, block57 is dropped by the balls 55 far enough to allow the lever controlledby arm 45 to drop down into the path of the corresponding pin 48, andgas will then be supplied to each end of the cy iinder, this arrangementcontinuing as long as the load is heavy enough to require the extrapower. As soon as the load lightens the outer ends of both levers 43 areraised and that one which is controlled by arm 45" is again thrown outof the path of movement of its pin 48. Arms 45 and 45" may be set at anydesired angle relatively to each other, so that any desired increase ofload will cause gas to be admitted to both ends of the cylinder, andsaid arms may be so set that both ends of the cylinder will work even,if desired. It will be IOO IIO

i f W pivot-point of leve'rs 43 being lower than the pivot-point of armsl5 and 45 the inner vends of said levers 43 move out of engagement witharms l5 and l5 when pins 48 press the said `levers inward, so that thegovernor-balls are not hampered in their movement by the engagement ofeither one of pins i8 with its corresponding lever 43. This openconnection between the gas-valve and the governor enables the governorto act upon each gasvalve entirely independently of the other, so thatit is very sensitive to any changes of speed of the engine which mayoccur while one of the said valves is being operated by thecorresponding admission-valve.

The outer ends of levers 43 are provided with spurs l? and the innerends of pins 4S are notched, so that said pins will continue to engagewith said levers until the said levers are entirely out of the path ofmovement of the pins. lfly this construction the upper and lower edgesof the outer ends of the levers will not become rounded oft and thuscause the pins to miss the levers before they should do so. In order toincrease the average speed of the engine, collar 6l is moved down uponthe upper end of bearing 50, thereby increasing the stiffness of springs65.

I claim as my inventionl. In a governor for gas-engines, the combinationwith the gas-inlet valve thereof, a lever pivoted to said valve, andmeans for operating said valve through the medium of said lever, of arock-shaft, an arm carried by said rock-shaft and adapted to engage withone end of the gas-valve lever but independent thereof, and meanscontrolled by the speed of the engine for operating said rockshaft, thearrangement being such that, when the gas-valve lever is moved so as toopen the valve, the said lever will be moved out of engagement with thearm carried by the roekshaft, substantially as and for the purposespecified.

2. In a double-acting gas-engine, the coinbination with a pair ofgas-inlet valves, and means for opening said valves, of a governorshaftmounted in suitable bearings and provided with governor-balls, andintermediate connecting mechanism between said balls and thegas-valve-cperating means, whereby the movement of said balls from thegovernorshaft will cause one of said valve-operating mea-ns to becomeinoperative while the other of said means still remains in operativeposition, the arrangement being such that, as each of the means foropening the valves is operated to open its valve, the said means will bemoved out'of engagement with said intermediate connecting mechanism, asand for the purpose described.

3. In a governor for gas-engines, the combination with the gas-inletvalve thereof, a lever pivoted to said valve, and means :for openingsaid valve through the medium of said lever, of a governor-shaft mountedin suitable beari'ngs and having governor-balls secured thereto, arock-sha1 t, intermediate connecting mechanism between said rock-shaftand the governor-balls whereby the movement of said balls toward andfrom the governor-shaft will cause a rocking movement of saidrock-shaft, an arm carried bysaid rockshaft and adapted to engage withone end of thcgas-valve lever but Vindependent thereof, the arrangementbeing such that, as the gasvalve lever is moved so as to open the valve,the said lever will be moved out of engagement with said arm, allcombined and arranged to cooperate in such a manner that a movement ofthe governor-balls toward or from the governor-shaft will cause the saidgas-valve lever to swing upon its pivot, as and for the purpose setforth.

4. In a governor for gas-engines, the combination with the gas-inletvalve thereof, a lever pivoted to said valve, and means for opening saidvalve through the medium of said lever, of a governor-shaft mounted insuitable bearings, a link pivoted to said shaft, a block longitudinallymovable on said shaft, a link pi voted thereto, a governor-ball mountedbetween the free end of said links, a rockshaft, an arm carried by saidrock-shaft and adapted to be eng'aged by said longitudinallymovableblock, and an arm secured to said rock-shaft and adapted to engage withone end of the gas-valve lever but independent thereof, the arrangementbeing such that, as the lever is moved so as to open the valve, the saidlever will be moved out of engagement with said last-mentioned arm, allcombined and arranged to cooperate substantially as and for the purposeset forth. f

5. In a governor for gas-engines, the combination with the gas-inletvalve thereof, a lever pivoted to said valve, and means for opening saidvalve through the medium of said lever, of agovernor-shaft mounted insuitable beariugs, a link pivoted to said shaft, a block longitudinallymovable on said shaft, a link pivoted thereto, a governor-ball mountedbetween the free ends of said links, a roekshat, an arm carried by saidrock-shaft and adapted to be engaged by said longitudinallymovableblock, a spring secured at one end to said arm and at the other end to afixed point, and an arm secured to said rock-shaft and adapted to engagewith one end of the gas-valve lever but independent thereof, thearrangement being such that, as the lever is moved so as to open thevalve, the said lever will be moved out of engagement with the saidlast-mentioned arm, all combined and arranged to cooperate as and forthe purpose set fort-h.

6. In a double-acting gas-engine, the combination with a pairofgas-inlet valves, and independent means for operating each of saidvalves, of means controlled by the speed of the engine and connectedtosaid gas-valve.-

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operating means, whereby the movement of said speed-controlled meanswill cause one of the valve-operating means to become inoperative Whilethe other of said valve-operatin g means still remains in operativeposition, the arrangement being sneh that, as each of the means foroperating the valves is operated so as to open its valve, the said meanswill be moved out of engagement with said speedeontrolled means, as andfor the purpose set forth.

7. In a governor for a double-acting gasengine, the combination with thepair of gasinlet valves, a lever pivoted to eaeh of said valves, andmeans for independently openingl eaeh of said levers through the mediumof its respective lever, of a governor-shaft mounted in suitablebearings and having governorballs secured thereto, a rook-shaft,intermediate connecting mechanism between said rook-shaft and thegovernor-balls whereby the movement of said governor-balls toward andfrom the governor-shaft will cause a roeking movement of saidrook-shaft, and two arms carried by said rook-shaft and rotativelyadjustable thereon, eaeh of said arms being adapted to engage with oneof the gas-valve levers, but eaoh of said arms being capable of amovement independent of the gas-valve levers all Combined and arrangedto Cooperate in sueh a manner that a movement of the governor-ballstoward or from the governorshaft will cause the said gas-valve levers toswing upon their pivots.

S. In a governor for a double-acting gasengine, the combination with thepair of gasinlet valves, a lever pivoted to eaeh of said valves, andmeans for independently opening each of said valves through the mediumof its respective lever, of a governor-shaft mounted in suitablebearings, `two links pi voted to said shaft, a block longitudinallymovable on said shaft, two links piv'oted thereto, two governorballsmounted one between eaoli pair of links, a rook-shaft, a pair of armscarried by said rook-shaft and adapted to be engaged by saidlongitudinally-movable bleek, a collar longitudinally movable toward andfrom said block, two springs eaeh secured at one end to said collar andat the other end to one of said arms, and two arms secured one at eaehend of the rook-shaft and rotatively adjustable thereon, each of thesaid arms being adapted to engage one end of one of the gas-valveievers, substantially as and Jfor the purpose set forth.

9. In a governor for gas-engines, a gas-inlet valve therefor whichConsists of a valve-seat secured in the gas-inlet, a guide carried bysaid valve-seat, a cross-bar also carried by said valve-seat, avalve-stem mounted in a bearing in said Cross-bar and provided with avalve adapted to elose the opening in the valve-seat, a collar carriedby said valve-stem and adapted to move in said guide, a spring mountedbetween the eollar and the crossbar, a lever pivoted to'said collar,means for engaging one end of said lever and thereby opening the saidvalve, and means for engaging the other end of said lever and therebylifting the said lever out of the path of move- `ment of thevalve-operating means, substantially as set forth.

FRED W. SPACKE.

Vitnesses:

A. M. Hoon, M. V. HOOD.

